Fastening inserting machine



Aug. 8, 1933. F. N. LA CHAPELLE FASTENING INSERTING MACHINE Filed April 15, 1930 2 Sheets-Sheet l w 1 6 o o 22 1 i o i O 2 'mx E: o E

Aug. 8, 1933- F. N. LA CHAPELLE 1,920,990

FASTENING INSERTING MACHINE 2 Sheets-Sheet 2 Patented Au 8, 1933 4 UNITED STATES PATENT OFFICE" g FASTENING INSERTIN G MACHINE Fred N. La Chapelle, Beverly, Mass, assignor to United Shoe Machinery Corporation, Paterson,

N. J., a Corporation of New Jersey Application April 15,1930. Serial No. 444,565

Claims.

-10 against which the work piece is held by a suitable work support, the abutment being provided with a slot through which the awl passes in its work penetrating movement and along which it is moved during its work feeding movement. The

awls used in thesemachines vary in diameter according to the size and nature of the fastenings which are being inserted and in someinstances are not heavy enough, at least if made of the steel commonly used for such parts, to stand the strains to which they are subjected during 5 the work feeding movement. These strains are increased at times, particularly when inserting fastenings in relatively soft stock, by the bulging of the work pieceinto the slot of the abutment under pressure applied by the work support of the machine which presses the work forcibly against the abutment at the time of the awl pene- V trating movement and at the instant that each fastening is inserted. While the work support is moved a short distance away from the abutment during the work feeding movement thereby relieving the pressure against the' abutment,

it happens at times that the stock is pressed up into the slot of the abutment at the time a fastening is inserted and while the awl penetrates the work to make the holefor the succeeding fastening to such an extent that the bulge thus formed prevents the work piece from clearing the abutment properly during the subsequent feeding movement of the awl. This, of course, increases the stresses and the consequent strain to which the 'awl is subjected during its work feeding movement.

In view of the foregoing a feature of the invention comprises a member illustrated herein as a-hollow finger adjacent to and moving with the awl during its work feeding movement and constructed and arranged to engage and back up the'awl, in eifect stiffening the awl and thereby relieving the awl of a large portion of the strain due to its work feeding movement. Preferably, moreover, and as illustrated herein, this member projects into the slot of the abutment in such a way as to prevent the work piece from bulging substantially into the slot or-at least substantially to reduce such bulging. This, of course, also reduces the stresses to which the awl is subjected.

When such a construction is used in a fibre fastening-inserting machine which inserts ad- 5 hesive coated fastenings the member which backs up the awl can advantageously be used to transmit liquid used for moisten'ing'the adhesive coating of the fastenings. Thus in accordance with another feature of the invention the member of the illustrated machine which backs up the awl, and which as illustrated comprises a finger having an end substantially in engagement with the awl, is hollow and serves to conduct liquid to the awl from which it passes to the work piece thereby'serving' to moisten the dry-adhesive coating" of the fastenings. 0 I

With the above and other objects andfeatures in view the invention will now be described withreferen'ce to the accompanying drawings and pointed out in the claims.

In the drawings, f Fig. lis a side elevation of a portion of a fastening-inserting machine embodying the present inso vention;

Fig. 2 is a front elevation,'partly in section, of the lower portion of the head of the fasteninginserting machine of Fig. 1;

Fig. 3 is a horizontal section on the line IIIIII 8 of Fig.2; V 5

Fig. 4 is a side elevation and Fig. 5 is a sectional View on the line VV of Fig. 3 illustrating particularly themanner in which the awl of the machine is backed up during its work feeding movement; and V Fig. 6is a detail side elevation of the member by which the awl of the machine is backed up.

The invention is illustrated as embodied in a machine of the type disclosed in Letters Patent of the United States No. 1,417,540,'granted May 30, 1922 on an application filed in the name of Fred L. Mackenzie, the machine being provided, however, with a work support controlling mechanism including pawl and ratchet mechanism of the type illustrated in Figs. 23 and 24 of Letters Patent of the United States No. 1,686,808, granted October 9, 1928 on an application filed in the names of George Goddu and Fred L. Mackenzie. The illustrated machine is arranged to insert fibre fastenings instead of the metallic fastenings insertedby the machines of the patents just referred to and is accordingly provided with mechanism of the character shown in United States Letters Patent No. 1,849,253, granted March 15, 1932, no upon an application filed in the name of Fred cable in an awl bar carrier 20 (Fig. 2) penetrates the work, illustrated as a shoe 26 having a sole 24, to form fastening-receiving openings .therein and is then moved to the left, as viewed in Figs... 2 and 5, by movement of the awl bar carrier 20 to feed the work, thereby bringing the hole formed by the awl in the work into aline'ment with-the driver 14. At this time, of course, the throat member 10 is maintained to the rear of the awl so that there is no interference between theparts'.

i The work support 22 by which the shoe 26 is carried is maintained in its elevated POSltlOILQS shown inFig. -l,, while the awl is given its work I penetrating movement, the sole 24 of the'shoe26 being at that time pressed forcibly against a substantially flat presser member or abutment 30 (Figs. 2and 4) with which the machine is provided. During the feeding movement ofthe awl 16, however, the pressure is relieved in a wellknown'manneryin the illustrate'd'machine by causing pawls 32 (Fig. l) to lock a ratchet 34 against downward movement under influence of a heavy spring 36 after which toggle 38 is broken thereby lowering the horn post 40 and the work support 22. At the; conclusion of the work feeding movement the toggle 38 is straightened and the pawls 32 withdrawn from the ratchet 34' so .that the spring 36 is effective to hold the horn post 40 or, the work support 22 in a position to press the sole 24 of the shoe firmly againstthe abutment 30. Yr

In order to prevent the awl from bending during thework feeding movement it is, in the illus trated machine, backed up by a rigid finger 44; 4 secured to the awl bar carrier 20 by a screw and. slot connection 46 (Figs. 2 and 3)- and having an end 48 in supporting engagement with the awl 16. Thus any tendency of the awl to bend as the awl bar carrier is moved to the left by theawlbar isresisted by the finger 44 and danger of breaking the. awlisthereby obviated. 1 It wilibe observed,

moreover, .that, as shown in Figs. 2 and 5, the I end48 of the fingerfiiprojects down into the slot 50 formed in the presser member 30 thereby preventing the sole.24 -of the shoe from bulging upwardly into the'slot under pressure applied by thework support 22and eliminating such resistance to the. feedingmovement of the work piece as would. result from. thebulging of the sole 24 of the. shoe 26 into the slot 50.

The fibre fastenings 52 (Figs. 2 and 5) inserted bythe illustrated machine are coated with dry glue which can be moistened as the fastenings are inserted thereby cementing the fastenings into place. Accordingly the finger 48 is bored, as indicated at 54, 56, (Fig. 6)v thebore 56 lining up with the passageway ofta tube 58 driven into the finger 44, and connectedlby -a rubber hose 60 with a source, of supply of water. "Thus the water is applied to the awl l6 and to the work piece adjacentto the awl by the. finger 44', thus moistening the work piece and serving to soften the glue coating of the fastenings 52. .A small amount of water, moreover, may run from the end of the; finger 44 directly into the hole when the awl 16 is withdrawn from the work piece.

As pointed-out. above, in the illustrated machine the finger 44 performs three functions- (1) backing up the awl during its feeding movcment, (2) preventing the work piece from bulg ing into. the slot of the abutment,and (3) serving as-a conduit to supply liquid. It should be understood, however, thatit is not essential under all circumstances that this member performs all of these functions. It may, within the scope of the invention, perform any one or any two of them.

It should be understood, moreover, that the invent ion is not to be regarded as limited to embodiment in a machine of the character illustrated except tothe extent required by the definitions of the claims. I i

-Hav-ing thus described my invention what I claim as new and desire to secure by Letters Patent of the United States is:

1.'A fastening-inserting machine having an awl constructed and arranged tomake fastening receiving holes in a work piece presented to the machine and to feed the work, a memberadja-1 cent to the work and moving with the awl during its work feeding-movement comprising a' finger the end of which engages and backs up the awl thereby relieving the awl of a large portion of the strain of its work-feeding movement, and means constructed and arranged to drive a fastening into the work at the conclusion of the feedingmovement. 1 I V 2. A fastening-inserting machine having an awl carrier, an awl carried thereby and constructed and arranged to make fastening-receiving holes in aworkpiece presented to the machine and to feed the work, a finger carried by the awl car- .rier adjacent to the work and moving with the awl during its work-feeding movement con-j structed and arranged to engage and back up the awl thereby relieving the awl of a large portion of the strain of its work-feeding movement, and a driver arranged to insert a fastening into the work after the feeding movement has been completed.

3. A fastening-inserting machine having a slotted abutment, an awl constructed and arranged for movement through and along the slot of said abutment to form fastening-receiving holes in a work piece presented to said abutment and to feed the work piece, a driver arranged to insert fastenings into the holes formed by the awl, a work support constructed and arranged to force the work piece against said abutment during the work penetrating movement of the awl and during the insertion of the fastenings, and a finger havingafree end which backs upv the awl and is positioned in the slot of the abutment to prevent the work piece from bulging substantially into the slot while the pressure is applied by the work slotted abutment against which a work piece is pressed while fastenings are inserted therein, an awl operating through the slot of the abutment to form fastening-receiving holes in the work piece and to feed the work piece, and a hollow member a portion of which is located in the slot of the abutment constructed and arranged to prevent the work piece from bulging substantially intothe slot, said member also serving to back up the awl thereby relieving it of the strain of its work feeding movement and serving as, a

I awl and having an end substantially in engagement with the awl thereby serving to conduct liquid to the awl.

7. A fastening-inserting machine having an awl constructed and arranged to form fasteningreceiving holes in a work piece, and a hollow member backing up the awl, said member being connected with a source of supply of liquid and having an outlet closely adjacent to the awl whereby the liquid passes from the hollow member to the work piece, v

8. .A fastening inserting" machine having an awl constructed and arranged to form fastening receiving holes in a" work piece, a driver operated to insert in the'holes fastenings the surfaces of which are of material which becomes adhesive under the action of a suitable'solvent, and means for applying such solvent to the surface of the awl whereby the awl carries the solvent into the holes which it forms for the reception of the fastenings.

9. A fastening inserting machine having an awl constructed and arranged to make fastening receiving holes in and to feed a work piece, a rigid hollow finger terminating adjacent to the surface of the work piece in which fastenings are to be inserted and adjacent to the position occupied by the awl when it is thrust into the work piece to initiate work feeding movement thereof,.means for moving said finger with the awl during the work feeding movement, and means for supplying liquid to the hollow finger whereby the liquid passes through the finger and is applied to the work piece at the points where the fastenings are to be inserted.

10. A fastening inserting machine having an awl carrier, an awl carried thereby and con structed and arranged to make fastening receiv-' ing holes in a work piece, a driver operated to insert fastenings in the awl holes, a rigid hollow finger terminating adjacent to the surface of the work piece and adjacent to the position occupied by the awl when it is thrust into the work piece to initiate the work feeding movement, means for moving the awl carrier when the awl has penetrated the work piece, thereby moving the awl to feed the work piece andmoving the hollow finger with the awl, and means for supplyingliquid to the finger whereby the liquid passes through the finger and is applied to the work piece at the points where the fastenings are to be inserted.

'FRED N. LA CHAPELLE. 

